@article{Cai2017, 
author = {Shuangfei Cai and Xinghang Jia and Qiusen Han and Xiyun Yan and Rong Yang and Chen Wang},
title = {Porous Pt/Ag nanoparticles with excellent multifunctional enzyme mimic activities and antibacterial effects},
year = {2017},
journal = {Nano Research},
volume = {10},
number = {6},
pages = {2056-2069},
keywords = {oxygen reduction reaction, platinum, enzyme mimic, porous, antibacterial},
url = {https://www.sciopen.com/article/10.1007/s12274-016-1395-0},
doi = {10.1007/s12274-016-1395-0},
abstract = {Enhancing the activity of Pt-based nanocatalysts is of great significance yet a challenge for the oxygen reduction reaction (ORR). In this work, a series of porous Pt/Ag nanoparticles (NPs) were fabricated from regular PtxAg100–x (x = 25, 50, 75) octahedra by a facile and economical dealloying process. Remarkable enhancement in multiple enzyme-mimic activities related to ORR was observed for the dealloyed Pt50Ag50 (D-Pt50Ag50) NPs. This effect can be attributed to the resulting Pt-rich surface structure, increased surface area, and a synergistic effect of Pt and Ag atoms in the D-Pt50Ag50 NPs. Furthermore, the D-Pt50Ag50 NPs exerted excellent antibacterial effects on two model bacteria (gram-negative Escherichia coli and gram-positive Staphylococcus aureus). The present work represents a significant advance in the exploration of the relation between controllable synthesis of high-quality nanoalloys and their novel catalytic properties for various promising applications, including catalysts, biosensors, and biomedicine.}
}